Valve apparatus



Patented Jan. 24, 1933 imam: E. HERE, on LANCASTER, rnmisfv nvnme 1 vAIvE mamas,

Application fiieanamh 17, 1939. Serials gma,

This invention relates to improvements in valves, a particular purposebeingto provide a valve apparatus especially adaptable to 011 burnersbut not confined to such-use, and it consists of the constructions,combinations and arrangements herein described and claimed.

An object of the invention is'to provide a triple vidual valvecomponents are separately adjustable to meet the various kinds andconditions of fluids required to be controlled thereby. 1 V

Another object of the invention is to provide an individual valvecomponent which with but little modification can be made to serve eitheras a fiuid control valve or a pressure relief valve. r

A further object of the invention is toprovide a combined air and oilmixing and excess pressure relief valve, the mixingvalve functioningregularly within a given pressure range which when exceeded is relievedby the relief valve.

25 Other'objects andadvantages will appear in the followingspecification, reference being had to the accompanying drawingin which lI c Figure 1 is a vertical section of the valve apparatus as well as ofa part of an oil burner in which connection it is used,''parts beingshown in elevation. a

Figure 2 is a detail horizontal section taken substantially on the line2-2 of Fig- ,ure 1.

It has been stated that the valve apparatus is of general application,it not necessarily being confined to use inan oil burner in whichconnection it is herein described principally for the purpose ofillustration. The valve apparatus is a composite of a twin mixing valveoriginally claimed in a United States application known as Case No. 2filed by Frank E. Herr, January 19, 1929, Serial No..

333,622, and a certain air relief valve also disclosed in saidapplication, the composite or triple form of the valve being disclosedbut 7 not claimed in an application filed by Frank E. Herr in Canada,September 26, 1929,- Serial No. 355,702.

valve assemblage of which the indi-v An oil burner with which thevalveapparatus is intended to'be used may be of the typedisclosed inaUnited States application known as Case No. '1 filed by Frank E. Herr,

August 9, 1928, ScrialNo. 298,568. The latter application as well as theothers, employs a controltank generallydesignated 5 of whichonly'thesecondary or high pressure a chamber 13 is herein shown.

This chamber contains oiland air intro- 0 duced as a mixture by a pump(not shown). The oil and air separate so thatthere is a stratum of oilon the bottom and a stratum of air under pressure above the oil. A twinmixingvalve generally designated 14 receives the foregoing constituentsand causes them to be reconverted intona' mixture or spray by confluencein a mixing chamber 15 (Fig. 2) to which the air and oil are supplied byducts 16,11 or T Z Situated beside the twin mixing valve 14: andfastened to a block 18 on'a cover 19 com mon to allot the valves, is apressure relief valve, generally designated 20. This valve includes aball 21, pressed toward its seat upon an airport 22 'fromwhi'ch it isadapted to be raised byexcessive air" pressure in the secondary chamber13. to enable an escape;

intoan air COIlCllllt'Q?) which is'i-ncorporated in the cover andextends elsewhere. The

conduit has an air hole (n'otish'own) at a remote point, and while anescape of airto screwed into the hole 25 for the latter purpose. Thecomponents-27, 28 of the twin mixing valve 14, respectively forcontrolling thezfloW ofair'and oil of the mixing chamber 15, (Fig. 2),,areidentical in every re spect, hence the description of one willsuffice for both, "similar characters referring; to ..correspondingparts.

A gland" 29 is screwed into the t aaa of a bore3'0,of which the hole 24is a eounter bore, extending down} approximately mid-way so as todefihetan entrance chamher with which the duct 16 (Fig. 2) hascommunication. I

An upstanding sleeve 31 of the gland 29 has a thimble 32 screwedthereupon, the bore 36 under pressure.

The-stem 37 of a valve member 38 works in the retainer 35 and packing36. The stem 7 has a threaded portion 39 which screws-in acorrespondingly threaded portion 40;, f the gland 29. The upper endofthe stem 37is made non-circular at41 to receive a clock key or otherwrench which adjustments are'to be made.

-The thimble 32 :constitutes a "shield forthe stem 37. Were thestem.exposed, an

inadvertently directedblow might so bend it, that further needed,adjustment would .be

impossible and the replacement by an en 7 "pressure, and a block formedon the-cover tirely new valve component would be necessary-However, thethimble is'of amore sturdyconstruction and encompasses the exposed endof the screw stem so well that the possibility of damage to the stem isordinarily'very remote.

- Thus far it Will be understood that valve member 38 acts on the orderofa needle valve. .The adjacent edge ofthe hole 24 comprises its seatand the specific adjustment of the valve member in respect to the holegoverns the amount of air under pressure delivered to ,the mixingchamber (Fig. 2). A similar adjustment of the valve member 38 ofthe oilcomponent 28governs the admissionofoil to the mixing chamber. Theconfluence'of fluids produces a. mixture which {is conducted by a spraypipe 42 (Fig.2) to a burner nozzle not shown.

In reference. to the reliefv valve20, the "gland 43 has a dependingsleeve 44 by which the ball 21 will be guided. when. forced to recede byexcessiveair pressure- '45 situated in the sleeve 44=bears on the ballat; one end and against the head 46 ofan A spring adjustable stem 47 atthe other end...

The. exposed end of-this stem is guarded by a thimble 48in the manneralready described in connection with the air valve 27, the remainingstructure being identical requires no specific description.

As previously pointed out, the block 18 constitutes the common mountingof the three valve ComponentsThis produces a compact arrangement. Inaddition to its 3 "function as a common mounting the block 18 comprisespart of a boss on the cover 19in which '7 the'mixing chamber 15 (Fig. 2)is formed. v

. While the construction and arrangement chambers, and needle valvesadjustably carriedby the glands in confronting relationship to'adjacentedges of theholes for regulating; the inflow of air and oil.

2. Valve apparatus for a control tank con,- taining air and oil underpressure andhaving a cover comprising a twin mixing valve for regulatingthe outflow of air and oil, a relief valve for relieving the'tank ofexcessive air constituting a common mounting for eachof the valvesanddisposing them in a compact s formation.

, 3. In a control tank arranged to contain air and Oll under therein,each with an opening directed into" the tank, a pipe depending from oneof the openings and extending into the oil,'the remaining two openingsbeing'for the escape of air,a twin mixing valve having valve mem bers,of which'o'ne member is adjustable in respect to the oil openingandotwhich the other member is adjustable in respect to one of the airopenings, a ball arranged to be seated upon the remaining air opening,and means for yieldably holding the ball to its seat for anescape of airfrom thetank under excessive pressure; 3 Y

' 4. Valve apparatuscomprising a" pair of similar valveicomponentsconstituting a mix; lngfvalve each having ail-adjustabl valve.

member, a third valve component havinga loose, spring thevalvecomponents, each having a chamber receiving the respective valvecomponent and i each chamber having an opening the adjacent edge ofwhich may constitute a seat for the ofthe improved valve apparatus isthat of a generally' preferred form, obviously modifications and changesmaybe made without I pressedball valve member, and ablock constituting acommonmountmgtor

